| 摘要 |
PROBLEM TO BE SOLVED: To provide a reflection type analog phase shifter the number of components of which is reduced while ensuring the linearity of a frequency variable range of the reflection type analog phase shifter with respect to a control voltage. SOLUTION: A capacitor C5 of an additional control section 4b and a capacitor C4 of a 3 dB 90°hybrid coupler 4a respectively connected to a second port P2 are commonalized, a capacitor C7 of the additional control section 4b and a capacitor C2 of the 3 dB 90°hybrid coupler 4a respectively connected to a third port P3 are commonalized, capacitors C5, C7 of the additional control section 4b respectively connected to the second and third ports P2, P3 of the 3 dB 90°hybrid coupler 4a are eliminated, and the capacitance of the capacitors C4, C2 of the 3 dB 90°hybrid coupler when the capacitors C5, C7 of the additional control section 4b are eliminated is selected to be a multiple of 1.4 of the capacitance before the capacitors C5, C7 of the additional control section 4b are eliminated. COPYRIGHT: (C)2006,JPO&NCIPI
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